Earthquake with magnitude of Md 2.4 on date 18-07-1989 and time 16:53:41 (Italy) in region 7 km SE Cerreto di Spoleto (PG)

A magnitude Md 2.4 earthquake occured in region: 7 km SE Cerreto di Spoleto (PG), on

  • 18-07-1989 14:53:41 (UTC)
  • 18-07-1989 16:53:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 12.98 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Cerreto di Spoleto PG 7 1075 1075
Cascia PG 7 3217 4292
Poggiodomo PG 8 117 4409
Norcia PG 9 4957 9366
Vallo di Nera PG 10 364 9730
Preci PG 12 724 10454
Sant'Anatolia di Narco PG 13 564 11018
Sellano PG 13 1079 12097
Scheggino PG 14 461 12558
Monteleone di Spoleto PG 14 599 13157
Campello sul Clitunno PG 17 2442 15599
Visso MC 19 1107 16706
Castelsantangelo sul Nera MC 19 281 16987

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SE of Foligno (57155 inhabitants)
36 Km NE of Terni (111501 inhabitants)
59 Km NW of L'Aquila (69753 inhabitants)
60 Km SE of Perugia (166134 inhabitants)
61 Km W of Teramo (54892 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 2.4
ML-VAX 1.7
1989-07-18
14:53:41
42.78 12.98 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 95669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-07-18 14:53:41 ± 0.193
Latitude 42.78 ± 0.01
Longitude 12.98 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 95669

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 2115.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00332
Epicentral distance of station farthest from the epicenter (degree) 0.00769
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 95669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:29:33

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 95669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AZI.Z. 1989-07-18T14:54:11.50 10.0 undecidable manual SG 156 0.0077 0.63 0
--.ARV.Z. 1989-07-18T14:54:06.80 10.0 undecidable manual SG 357 0.0064 0.5 0.1
--.AZI.Z. 1989-07-18T14:53:58.00 10.0 undecidable manual PG 156 0.0077 -0.38 0.6
--.MNS.Z. 1989-07-18T14:53:57.66 10.0 undecidable manual SG 208 0.004 -0.07 0.7
--.ARV.Z. 1989-07-18T14:53:55.50 10.0 undecidable manual PG 357 0.0064 -0.24 1.1
--.ASS.Z. 1989-07-18T14:53:54.87 10.0 undecidable manual SG 319 0.0033 -0.23 0.5
--.MNS.Z. 1989-07-18T14:53:50.83 10.0 positive manual PG 208 0.004 0.04 3.5
--.ASS.Z. 1989-07-18T14:53:49.42 10.0 undecidable manual PG 319 0.0033 0.14 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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